X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/80ba20535cde899ede99eb3c38e98be0fe4bcf9a..3370d0c0f21a43223efe9ae0f76e67f04a332781:/Mach/Inject.cpp diff --git a/Mach/Inject.cpp b/Mach/Inject.cpp index 765a4ab..feb2c3c 100644 --- a/Mach/Inject.cpp +++ b/Mach/Inject.cpp @@ -1,46 +1,43 @@ -/* Cycript - Inlining/Optimizing JavaScript Compiler - * Copyright (C) 2009 Jay Freeman (saurik) +/* Cycript - Optimizing JavaScript Compiler/Runtime + * Copyright (C) 2009-2013 Jay Freeman (saurik) */ -/* Modified BSD License {{{ */ +/* GNU General Public License, Version 3 {{{ */ /* - * Redistribution and use in source and binary - * forms, with or without modification, are permitted - * provided that the following conditions are met: + * Cycript is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published + * by the Free Software Foundation, either version 3 of the License, + * or (at your option) any later version. * - * 1. Redistributions of source code must retain the - * above copyright notice, this list of conditions - * and the following disclaimer. - * 2. Redistributions in binary form must reproduce the - * above copyright notice, this list of conditions - * and the following disclaimer in the documentation - * and/or other materials provided with the - * distribution. - * 3. The name of the author may not be used to endorse - * or promote products derived from this software - * without specific prior written permission. + * Cycript is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR - * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ + * You should have received a copy of the GNU General Public License + * along with Cycript. If not, see . +**/ /* }}} */ #include + #include -#include +#ifdef __APPLE__ +#include "TargetConditionals.h" +#endif + +#ifdef TARGET_OS_IPHONE +#include +#define mach_vm_allocate vm_allocate +#define mach_vm_protect vm_protect +#define mach_vm_write vm_write +#define mach_vm_address_t vm_address_t +#else +#include +#endif + +#include #include #include @@ -51,123 +48,133 @@ #include "Pooling.hpp" #include "Trampoline.t.hpp" -extern "C" void __pthread_set_self(pthread_t); +extern "C" void CYHandleServer(pid_t); void InjectLibrary(pid_t pid) { - // DOUG: turn this into some kind of -D passed from configure - const char *library("/usr/lib/libcycript.dylib"); - - static const size_t Stack_(8 * 1024); - size_t length(strlen(library) + 1), depth(sizeof(Baton) + length); - depth = (depth + sizeof(uintptr_t) + 1) / sizeof(uintptr_t) * sizeof(uintptr_t); + Dl_info addr; + _assert(dladdr(reinterpret_cast(&CYHandleServer), &addr) != 0); - CYPool pool; - uint8_t *local(reinterpret_cast(apr_palloc(pool, depth))); - Baton *baton(reinterpret_cast(local)); - - baton->__pthread_set_self = &__pthread_set_self; - - baton->pthread_create = &pthread_create; - baton->pthread_join = &pthread_join; - - baton->dlopen = &dlopen; - baton->dlsym = &dlsym; - - baton->mach_thread_self = &mach_thread_self; - baton->thread_terminate = &thread_terminate; - - baton->pid = getpid(); - memcpy(baton->library, library, length); - - vm_size_t size(depth + Stack_); + size_t flength(strlen(addr.dli_fname)); + char library[flength + 4 + 1]; + memcpy(library, addr.dli_fname, flength); + library[flength] = '\0'; + _assert(strcmp(library + flength - 6, ".dylib") == 0); + strcpy(library + flength - 6, "-any.dylib"); mach_port_t self(mach_task_self()), task; _krncall(task_for_pid(self, pid, &task)); - vm_address_t stack; - _krncall(vm_allocate(task, &stack, size, true)); - vm_address_t data(stack + Stack_); + mach_msg_type_number_t count; - vm_write(task, data, reinterpret_cast(baton), depth); + task_dyld_info info; + count = TASK_DYLD_INFO_COUNT; + _krncall(task_info(task, TASK_DYLD_INFO, reinterpret_cast(&info), &count)); + _assert(count == TASK_DYLD_INFO_COUNT); + _assert(info.all_image_info_addr != 0); thread_act_t thread; _krncall(thread_create(task, &thread)); - thread_state_flavor_t flavor; - mach_msg_type_number_t count; - size_t push; +#if defined (__i386__) || defined(__x86_64__) + x86_thread_state_t state; +#elif defined(__arm__) + arm_thread_state_t state; +#else + #error XXX: implement +#endif + + memset(&state, 0, sizeof(state)); + mach_msg_type_number_t read(MACHINE_THREAD_STATE_COUNT); + _krncall(thread_get_state(thread, MACHINE_THREAD_STATE, reinterpret_cast(&state), &read)); + _assert(read == MACHINE_THREAD_STATE_COUNT); Trampoline *trampoline; + size_t align; + size_t push; -#if defined(__arm__) - trampoline = &Trampoline_arm_; - arm_thread_state_t state; - flavor = ARM_THREAD_STATE; - count = ARM_THREAD_STATE_COUNT; +#if defined(__i386__) || defined(__x86_64__) + switch (state.tsh.flavor) { + case i386_THREAD_STATE: + trampoline = &Trampoline_i386_; + align = 4; + push = 5; + break; + case x86_THREAD_STATE64: + trampoline = &Trampoline_x86_64_; + align = 8; + push = 2; + break; + default: + _assert(false); + } +#elif defined(__arm__) + trampoline = &Trampoline_armv6_; + align = 4; push = 0; -#elif defined(__i386__) - trampoline = &Trampoline_i386_; - i386_thread_state_t state; - flavor = i386_THREAD_STATE; - count = i386_THREAD_STATE_COUNT; - push = 5; -#elif defined(__x86_64__) - trampoline = &Trampoline_x86_64_; - x86_thread_state64_t state; - flavor = x86_THREAD_STATE64; - count = x86_THREAD_STATE64_COUNT; - push = 2; #else #error XXX: implement #endif - vm_address_t code; - _krncall(vm_allocate(task, &code, trampoline->size_, true)); - vm_write(task, code, reinterpret_cast(trampoline->data_), trampoline->size_); - _krncall(vm_protect(task, code, trampoline->size_, false, VM_PROT_READ | VM_PROT_EXECUTE)); + static const size_t Stack_(8 * 1024); + size_t length(strlen(library) + 1), depth(sizeof(Baton) + length); + depth = (depth + align + 1) / align * align; - /* - printf("_ptss:%p\n", baton->__pthread_set_self); - printf("dlsym:%p\n", baton->dlsym); - printf("code:%zx\n", (size_t) code); - */ + CYPool pool; + uint8_t *local(pool.malloc(depth)); + Baton *baton(reinterpret_cast(local)); + + baton->dyld = info.all_image_info_addr; + baton->pid = getpid(); + memcpy(baton->library, library, length); + + mach_vm_size_t size(depth + Stack_); + mach_vm_address_t stack; + _krncall(mach_vm_allocate(task, &stack, size, true)); + + mach_vm_address_t data(stack + Stack_); + _krncall(mach_vm_write(task, data, reinterpret_cast(baton), depth)); + + mach_vm_address_t code; + _krncall(mach_vm_allocate(task, &code, trampoline->size_, true)); + _krncall(mach_vm_write(task, code, reinterpret_cast(trampoline->data_), trampoline->size_)); + _krncall(mach_vm_protect(task, code, trampoline->size_, false, VM_PROT_READ | VM_PROT_EXECUTE)); uint32_t frame[push]; if (sizeof(frame) != 0) memset(frame, 0, sizeof(frame)); - memset(&state, 0, sizeof(state)); - - mach_msg_type_number_t read(count); - _krncall(thread_get_state(thread, flavor, reinterpret_cast(&state), &read)); - _assert(count == count); -#if defined(__arm__) - state.r[0] = data; - state.sp = stack + Stack_; - state.pc = code + trampoline->entry_; - - if ((state.pc & 0x1) != 0) { - state.pc &= ~0x1; - state.cpsr |= 0x20; +#if defined(__i386__) || defined(__x86_64__) + switch (state.tsh.flavor) { + case i386_THREAD_STATE: + frame[1] = data; + state.uts.ts32.__eip = code + trampoline->entry_; + state.uts.ts32.__esp = stack + Stack_ - sizeof(frame); + break; + case x86_THREAD_STATE64: + state.uts.ts64.__rdi = data; + state.uts.ts64.__rip = code + trampoline->entry_; + state.uts.ts64.__rsp = stack + Stack_ - sizeof(frame); + break; + default: + _assert(false); + } +#elif defined(__arm__) + state.__r[0] = data; + state.__pc = code + trampoline->entry_; + state.__sp = stack + Stack_ - sizeof(frame); + + if ((state.__pc & 0x1) != 0) { + state.__pc &= ~0x1; + state.__cpsr |= 0x20; } -#elif defined(__i386__) - frame[1] = data; - - state.__eip = code + trampoline->entry_; - state.__esp = stack + Stack_ - sizeof(frame); -#elif defined(__x86_64__) - frame[0] = 0xdeadbeef; - state.__rdi = data; - state.__rip = code + trampoline->entry_; - state.__rsp = stack + Stack_ - sizeof(frame); #else #error XXX: implement #endif if (sizeof(frame) != 0) - vm_write(task, stack + Stack_ - sizeof(frame), reinterpret_cast(frame), sizeof(frame)); + _krncall(mach_vm_write(task, stack + Stack_ - sizeof(frame), reinterpret_cast(frame), sizeof(frame))); - _krncall(thread_set_state(thread, flavor, reinterpret_cast(&state), count)); + _krncall(thread_set_state(thread, MACHINE_THREAD_STATE, reinterpret_cast(&state), MACHINE_THREAD_STATE_COUNT)); _krncall(thread_resume(thread)); _krncall(mach_port_deallocate(self, task));